نتایج جستجو برای: morphometric difference

تعداد نتایج: 437204  

2015
ALEXANDER J. HETHERINGTON EMMA SHERRATT MARK WILKINSON BRADLEY DELINE PHILIP C. J. DONOGHUE

The distinctly non-random diversity of organismal form manifests itself in discrete clusters of taxa that share a common body plan. As a result, analyses of disparity require a scalable comparative framework. The difficulties of applying geometric morphometrics to disparity analyses of groups with vastly divergent body plans are overcome partly by the use of cladistic characters. Character-base...

2017
Etienne Cavaignac Ke Li Marie Faruch Frederic Savall Philippe Chiron W. Huang Norbert Telmon

BACKGROUND Ethnic dimorphism in the distal femur has never been studied in a three-dimensional analysis focused on shape instead of size. Yet, this dimorphism has direct implications in orthopedic surgery and in anthropology. The goal of this study was to show that differences in distal femur shape related to ethnic dimorphism could be identified, visualized, and quantified using 3D geometric m...

Journal: :Journal of applied physiology 2006
Shawn E Soutiere Wayne Mitzner

Previous work by our group has demonstrated substantial differences in lung volume and morphometric parameters between inbred mice. Specifically, adult C3H/HeJ (C3) have a 50% larger lung volume and 30% greater mean linear intercept than C57BL/6J (B6) mice. Although much of lung development occurs postnatally in rodents, it is uncertain at what age the differences between these strains become m...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2001
L M de Lima L C dos Reis M A de Lima

To investigate the influence of the pineal gland through melatonin secretion on the physiological and morphological parameters of pancreatic islets, we studied the plasma biochemistry and morphological and morphometric characteristics of the endocrine pancreas of male Wistar rats. The animals were distributed into five groups of ten rats each: NC - normal control group; NS -- sham-operated grou...

Journal: :Investigative ophthalmology & visual science 2012
Geoffrey Chan Chandrakumar Balaratnasingam Paula K Yu William H Morgan Ian L McAllister Stephen J Cringle Dao-Yi Yu

PURPOSE To quantify the distribution and morphometric characteristics of capillary networks in the human perifovea. To determine correlations between the location of neuronal subcellular compartments and the morphometric features of regional capillary networks in the layered retina. METHODS The perifoveal region, located 2 mm nasal to the fovea, was studied in 17 human donor eyes. Novel micro...

Journal: :Zootaxa 2015
Adriana P Rebolledo Ingo S Wehrtmann Jose A Cuesta

The mangrove crab Aratus pisonii (H. Mile Edwards, 1837) was considered to have an amphi-American distribution but a recent genetic study revealed that the Eastern Tropical Pacific populations represent a new species, A. pacificus (Thiercelin & Schubart, 2014). These sister species separated by the Central American Isthmus have developed under different environmental conditions that may influen...

2015
ALEXANDER J. HETHERINGTON EMMA SHERRATT MARK WILKINSON BRADLEY DELINE PHILIP C. J. DONOGHUE

The distinctly non-random diversity of organismal form manifests itself in discrete clusters of taxa that share a common body plan. As a result, analyses of disparity require a scalable comparative framework. The difficulties of applying geometric morphometrics to disparity analyses of groups with vastly divergent body plans are overcome partly by the use of cladistic characters. Character-base...

2011
Emanuele Baurakiades Ana PC Martins N Victor Moreschi Camila DA Souza Karla Abujamra Augusto O Saito Maíra C Mecatti Mônica G Santos Camilla R Pimentel Larissa LG Silva Cristina R Cruz Lucia de Noronha

BACKGROUND The aim of this study was to compare histomorphometric changes and the results of immunohistochemical tests for VCAM, ICAM-1, CD4 and CD8 in normal placentas from HIV-seropositive pregnant women. METHODS Samples of normal placentas were divided into 2 groups: healthy HIV-seronegative pregnant women (control group = C = 60) and HIV-seropositive women (experimental group = E = 57). C...

Journal: : 2022

Aim: In our study, the relationship between mandible coronoid process and other morphometric parameters in dry bones it is aimed to compare these data sides. Materials Methods: anatomy laboratory, 22 from bone collection were photographed three different ways, right-left lateral posterior, using a digital camera. Measurements performed on images Image J software. Morphometric of ramus body dete...

2016
Janice L. Pappas J. Patrick Kociolek Eugene F. Stoermer

Morphometric methods have been used in diatom research for decades. We present a review of the history of usage of morphometric methods of outline shape analysis, pattern recognition, and landmarkbased analysis. In addition, we present how morphometric methods are important in diatom taxonomy and classifi cation and what connections exist between morphometric methods and biologically meaningful...

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